Answers
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Like many young women of the time, Emma followed her father's wishes. Her father received an offer for her hand, and he approved. Emma, of course, went along with his wishes. Note, she was perfectly happy with the arrangment.

As far as marrying him for staus, that was not the case. Emma's father had little money for a dowry, and the fact that Charles was in love with his daughter meant that the dowry would not be an issue. Charles would make a good husband.... he was in love, careful with his money, and very intelligent. Financially, they wouldn't be wealthy, but they would be comfortable.